Floor-box for electric wiring.



EATEN'LED JUNE 4, 1907.

H; KRANTZ, FLOOR BOX FUR ELECTRIC WIRING.

APPLICATION FILED SEPT. 22.1905

\NVENTOR Huber? finmfz B3 jfg-w-dm Wm ATTORNEYS.

WSTNESSES HUBE'RT KRANTZ, or NEW \YORK, N. Y.

FLOOR-BOX FoR ELECTRIC WIRING.

I Specification of Letters Patent.

Patented June 4, 1907.

Application filed September 22, 1905. Serial No. 279,740.

To all whom it may concern.-

Be it known that I, HUBERT KRANTZ, a citizen of the United States ofAmerica, and residing in the borough of Brooklyn, city of New York,county of Kings, in the State of New York, have invented certain new anduseful Improvements in Floor-Boxes for Electrio Wiring, of which thefollowing is a specification.

My invention relates more particularly to outlet boxes for electricwiring, and it has special reference to the construction of boxes whichare used in floors.

The main object of my invention is to so construct the box that theflooring can be finished without first positioning the outlet box, butthe upper part of the latter can be adjusted afterward to that positionwhich is in a measure demanded by the surface of the floor which is laidafter the box has been connected to the conduit pipes. This object Iattain by the construction shown in the accompanyingv drawings,- inwhich Figure 1 is a vertical section of my im proved floor box; and Fig.2 is a plan view of the same with the cover plate removed.

A is the lower part of the floor box, to which the conduit pipes are tobe connected to lead in the conductor wires. In conjunction with this, Iprovide an upper section B, which may be adjusted vertlcally, as byscrews threading (at no) one onto the other. Over this upper section Iprovide a ring R, with a ball and socket s'ection connection between thetwo at J, whereby such ring may be leveled to the fioor or other surfacein which the box is set. Two or more lugs r (three being shown in thepresent instance) are provided on one part to carry screws T the pointsof which engage inclined surfaces r on the other part to secure theangular adjustment with accuracy and to hold the parts firmly in theiradjusted positions. In the present instance the lugs r and screws 1" areshown on the ring R, while the inclined surfaces are on the upper part Bof the box.

The metal ring R, which is preferably of brass, and is recessed toreceive the cover C, serves as a facing against which the flooring maybe finished. In the present instance, I have shown this ring as alsoprovided with lugs, R R on which the receptacle for the floor box plugmay be secured, but I do not wish to confine myself to mounting thereceptacle upon the ring R. In fact it may be used without anyreceptacle, as an outlet box.

It is thus seen that by means of this construction of the box, the upperface comprising the finishing ring R and the cover C, may be brought tothe level of the floor or other surface in or beneath which the box hasbeen placed, without disturbing such surface. If in the approximateadjustment of the box before such surface is finished, for exam lebefore the floor is laid, it happens that t 1e box was set too low, thewhole upper part B may be raised vertically by simply revolving the sameon the threaded lower part A until the level of the finished floor isreached. If the box also proves to have been put in at an angle or ifthe floor itself is inclined at this point, the ring R may be tilted bymeans of the screws r until it is true with the surface. Both of theseresults, it is to be observed, are obtained through means operated fromthe interior of the box and therefore accessible after the floor orother surface has been finished at the box.

I claim as my invention 1. An outlet box having a finishing ring R, aball joint adjustment between the ring and the box, and meansconveniently accessible for operating said adjustment after the surfaceinto which the box is set is finished at the box.

2. An outlet box having a finishing ring R, a ball joint between the boxand the finishing ring and screws and inclined surfaces to adjust theball joint connection.

3. An outlet box having two parts adjustable vertically with referenceto each other, a finishing ring R, a ball joint adjustment between saidring and the upper part of the box proper, and means for operating suchadjustments after the surface into whlch the box is set has beenfinished at the box. Y

4. The combination of the lower and upper parts of an outlet boxadjustable vertically with reference to each other, with a top finishingring, a ball joint between the ring and the upper part of the box andscrews and inclined surfaces bywhich the ball joint may be adjustedafter the surface into which the box is set has been finished at thebox.

5. The combination of the lower and upper parts of an outlet boxadjustable vertically with reference to each other, with a top finishingring having means to carry the recepname to this specification, in thepresence of tecle, Wlth a bell omt ed uStment between two subscnblngwltnesses.

the ring and the upper part oft-he box and 1 means to operate suchadjustment after the HUBERT 5 surface into which the box is set has beenfin- T Vitnesses:

ished at the box. S. L. VVHITLOCK,

Intestimony whereof I have signed my J. A. NEWTON.

